# Bulk Action Bar (Lumen Halo): prompt.md (v1.0.0)

- id: `lumen-bulk-action-bar` · version 1.0.0 · component · pro (All-Access)
- category: Data
- build: Base UI (one set of files; its dependencies follow the build)
- install (this build): `npx shadcn@latest add @beautiful-ui-pro/lumen-bulk-action-bar`
- npm dependencies: none
- registry dependencies: utils, @beautiful-ui/lumen-button, @beautiful-ui-pro/lumen-alert-dialog, https://beautiful-ui.dev/r/lumen-foundation.json
- docs: https://beautiful-ui.dev/components/lumen-bulk-action-bar
- The install command carries everything this item needs (files, CSS, tokens, npm and registry dependencies). Prefer it to copying source by hand.

A glass bar that rises in when rows are selected: the count is the one lit thing on it, the actions apply to every selected row, anything destructive asks first, and narrow containers fold the extras behind More.

## Build it
- Stack: React 19 (`ref` is a plain prop), TypeScript, Tailwind CSS v4 utilities, a shadcn-initialised project with the `@/*` alias.
- Packages: none beyond React.
- Files: `components/ui/lumen/controls/bulk-action-bar.tsx`.
- Registry dependencies, installed with it automatically: shadcn `utils` (cn), `lumen-button`, `lumen-alert-dialog`, `lumen-foundation`.
- Builds: one set of files for both, but its dependencies come in Base UI and Radix builds. Install the one that matches the project (see Install): a free item's bare URL installs the Base UI build of it and its dependencies.
- Exports to keep: `BulkActionBar`, `BulkAction`, and every exported type.
- CSS: the install merges this item's rules (the registry `css` field) into your global stylesheet, in `@layer components`, and adds the lumen foundation (tokens, keyframes, motion levels) once. Nothing to import by hand.
- Re-running `add` (or `--overwrite`) re-applies those rules: put overrides in your own CSS, never in the installed rules.
- Tokens: retheme with the `--lumen-*` custom properties (`--lumen-accent`, `--lumen-accent-text`, `--lumen-bad`, `--lumen-bad-text`, `--lumen-focus`, `--lumen-good`, `--lumen-good-text`, `--lumen-hairline`, `--lumen-ink`, `--lumen-muted-ink`, `--lumen-series-1`, `--lumen-series-2`, `--lumen-series-3`, `--lumen-series-4`, `--lumen-series-5`, `--lumen-series-6`, `--lumen-warn`, `--lumen-warn-text`); this item's CSS also reads `--lumen-font-sans`, `--lumen-radius-k`. Never add Tailwind colour classes inside the component.

```tsx
import { BulkAction, BulkActionBar } from "@/components/ui/lumen/controls/bulk-action-bar";
```

## Parts

| Part | data-slot | What it is for |
|---|---|---|
| `BulkActionBar` | — | The bar, count and clear. |
| `BulkAction` | — | One action; confirms when destructive. |

## Sound
- Keep every `data-slot` and `data-sound` attribute: the sound layer reads them.
- Installing this item adds no audio. Nothing plays until the app mounts `GlassSoundProvider` once (install: `npx shadcn@latest add https://beautiful-ui.dev/r/glass-sound.json`, import from `@/components/beautiful-ui/glass-sound`); `GlassSoundToggle` is its mute control. Without a provider the audio engine never loads.

## Match the original
- Read `components/ui/lumen/controls/bulk-action-bar.tsx` as the reference implementation before changing or recreating anything, and match it: sizes, colours per theme, motion timings, copy and behaviour.
- If you deviate (a prop you can't honour, a style you changed, a dependency you swapped), say so in your reply, part by part.
- Keep the accessibility contract, the keyboard map and the motion levels listed below.

## Use it when
- bulk actions, batch actions, selected rows, multi-select actions, table selection toolbar, Lumen
- A table or list where people select several rows and act on them together

### Not when
- One row's actions: put them in the row or a dropdown menu

## Mistakes
- Keep the destructive action last
- Say what a destructive action takes with it in the confirmation

## Usage

```tsx
import { BulkAction, BulkActionBar } from "@/components/ui/lumen/controls/bulk-action-bar";

<BulkActionBar count={selected.length} noun={{ one: "account", other: "accounts" }} onClear={() => setSelected([])}>
  <BulkAction onSelect={() => exportCsv(selected)}>Export</BulkAction>
  <BulkAction onSelect={() => assign(selected)}>Assign owner</BulkAction>
  <BulkAction destructive confirm={{ title: `Delete ${selected.length} accounts?`, description: "Their dashboards go with them." }} onSelect={() => remove(selected)}>Delete</BulkAction>
</BulkActionBar>
```

## Props

| Prop | Type | Default | What it does |
|---|---|---|---|
| `count` | `number` |  | Selected rows. The bar hides at 0. |
| `noun` | `{ one: string; other: string }` | `{ one: "item", other: "items" }` | What is selected, for the count and the confirmations. |
| `onClear` | `() => void` |  | Clear the selection. |
| `sticky` | `boolean` | `true` | Stick to the bottom of the scroll area. |
| `BulkAction destructive / confirm` | `boolean / { title, description?, confirmLabel? }` |  | Destructive actions always confirm; pass words to say exactly what happens. |
| `BulkAction onSelect` | `() => void \| Promise<void>` |  | Return a promise to keep the dialog open, busy, until it settles. |

Full docs: https://beautiful-ui.dev/components/lumen-bulk-action-bar

## Customising
- Colours: set the `--lumen-*` tokens on `:root`, or on a container with the `lumen-scope` class to retheme one area. Add the `lumen-inherit` class to follow your shadcn palette instead (`--chart-N`, `--destructive`).
- Dark mode follows the `.dark` class on an ancestor (the shadcn and next-themes convention).
- Update later by re-running the install with `--overwrite` (review the diff if you edited it). Changelog: https://beautiful-ui.dev/r/changelog.json

## Keyboard

| Keys | Action |
|---|---|
| Tab | Moves through the actions |
| Escape | Closes More or the confirmation |

## Motion inventory

| Interaction | What moves |
|---|---|
| Selection starts | The bar rises in on the spring |

## Accessibility contract (preserve when editing)
- role=toolbar named with the count
- The count is a polite live region
- Destructive actions confirm in an alert dialog

## Install

```bash
npx shadcn@latest add @beautiful-ui-pro/lumen-bulk-action-bar
```

Pro item: needs the `@beautiful-ui-pro` registry in `components.json` and `BEAUTIFUL_UI_TOKEN` in `.env.local` (https://beautiful-ui.dev/account). Setup: https://beautiful-ui.dev/docs/pro. Your components.json `style` picks the build: radix-*, new-york and default get Radix, base-* gets Base UI.

## Credits
- Built on shadcn/ui (https://ui.shadcn.com)

The lumen foundation (the tokens listed above, keyframes and motion levels) installs once with the first component; its CSS is public at https://beautiful-ui.dev/r/lumen-foundation.json.